When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to as a "post-term pregnancy."
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5

You can use a:
Standard home pregnancy test when you miss a period (can repeat in a week or less if negative) or an early pregnancy test may be able to detect pregnancy up to 6 days prior to the anticipated period.
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6

After missed period:
You may use any of the fda approved, over the count test kits. It would be better to wait 4-5 days after a missed period; use first morning urine and follow the instructions in the package carefully.
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8

3 weeks:
A urinepregnancy test done correctly will give a reliable result 3 weeks after sex (after presumed conception), or 1 week after missing a regular period. If one's regular period comes, there is no need to do a pregnancy test, but just wait to see if the next period is missed.
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A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as 10 days after conception.
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